Grown-ups know that people and objects are solid. At the movies, we know that if we reach out to touch Tom Cruise, all we will feel is air. But does a baby have this understanding?
To see whether babies know objects are solid. T. Bower designed a method for projecting an optical illusion(视觉影像)of a hanging ball. His plan was to first give babies a real ball, one they could be expected to show surprised in their faces and movements, All the 16 to 24-week-old babies tested were surprised when they reached for the illusion and found that the ball was not there.
Grown-ups also have a sense of object permanence. We know that if we put a box in a room and lock the door, the box will still be there when we come back. But does a baby realize that a ball that rolls under a chair does not disappear and go to never-never land?
Experiments done by Bower suggest that babies develop a sense of object permanence when they are about 18 weeks old. In his experiments, Bower used a toy train that went behind a screen. When 16-week-old and 22-week-old babies watched the toy train disappear behind the left side of the screen, they looked to the right, expecting it to re-appear. If the experiment took the train off the table and lifted the screen, all the babies seemed surprised not to see the train. This seems to show that all the babies had a sense of object permanence. But the second part of the experiment showed that this was not really the case. The re-searcher substituted(替换) a ball for the train when it went behind the screen. The 22-week-old babies seemed surprised and looked back to the left side for the train. But the 16-week-old babies did not seem to notice the switch(更换).Thus,the 16-week-old babies seemed to have a sense of “something permanence,” while the 22-week-old babies had a sense of object permanence related to a particular object.
【小题1】The passage is mainly about        .

六、阅读理解 (20分)   
A
Mark Twain tells a boy’s story in The Adventure of Huckleberry Finn. Huck is a poor child, without a mother or home. His father drinks too much alcohol and always beats him.
Huck’s situation has freed him from the restriction of society. He explores in the woods and goes fishing. He stays out all night and does not go to school. He smokes.
Huck runs away from home. He meets Jim, a black man who has escaped from slavery(奴隶制). They travel together on a raft(木筏) made of wood down the Mississippi River.
Mark twain started writing “Huckleberry Finn” as a children’s story. But it soon became serious. The story tells about the social evil of slavery, seen through the eyes of an innocent child. Huck’s ideas about people were formed by the white society in which he lived. So, at first, he does not question slavery.Huck knows that important people believe slavery is natural, the law of God. So, he thinks it is his duty to tell Jim’s owners where to find him.
Later, Huck comes to understand that Jim is a good man. He finds he cannot carry out his plan to inform Jim’s owners of his whereabouts(下落). Instead, he decides to help Jim escape. He decides to do this, even if God punished him.
1. What is the passage mainly about?
A. The outline (概要) of The Adventure of Huckleberry Finn.
B. The childhood of Huckleberry.
C. The reason why Mark Twain wrote the story.
D. The effect of slavery.
The underlined word “restriction” probably means _________.
A. something that you are expected to do.
B. something that you are not allowed to do.
C. something that you are able to do.
D. something that you look forward to.
3. The underlined expression “he does not question slavery” means that ________.
A. he is sure about everything of slavery.
B. he has no question to ask the owner of the slaves.
C. he thinks that slavery is reasonable.
D. he believes that slavery is wrong.
4. What can he inferred from the text?
A. Huck is a white boy.
B. Huck’s childhood is a reflection(反映) of that of Mark Twain’s.
C. It ’s Huck’s situation that makes him decide to travel with Jim.
D. Huck will be punished by God for what he does.
5. Why does Huck change his mind at last?
A. He has made friends with Jim.
B. He finds out the weakness of slavery.
C. God tells him to do so.
D. He finds that Jim is a good man

 His plan was such a good one ______ we all agreed to accept it.

A. as              B. that         C. so               D. after which

根据文意填单词（部分首字母与汉语词义已给出）10分

76. The enemies a____________ the village slightly, but the villagers didn’t noticed the danger.

77. His plan ended in f___________, and we felt sorry for it.

78. Gandhi war married at the at of thirteen, following the l_________ custom.

79. My dress looks s__________ to yours, but the materials are different.

80.She is f__________ enough not to be hurt in the car accident.

81. Don’t be too c___________ about things you are not supposed to know.

82. Chemical fertilizers can kill both ____________（细菌）and pests.

83. His writing lacks ___________________（变化）.

84. On the map blue _________________（代表）river.

85. Putting the natural waste from animals makes the soil richer in ____（矿物质）.

His plan ＿＿＿＿＿ to be a perfect one.

A.proved     B.was proved  C.is proving     D.proving